Catalyst University
Spread Plates | Colony Counts (CFUs/mL) and Difference from Streak Plates
1) What are spread plates? 2) How do you perform a colony count to find the CFUs in the original stock (inoculum)? 3) How do spread plates differ from streak plates (streaking for isolation)
FuseSchool
What Are Dilutions
In this video, we will look at what dilutions are in chemistry, how to calculate them using a very easy equation and even extending to multiple dilutions which are called serial dilutions. Dilution is the process of adding water (or...
FuseSchool
What Are Serial Dilutions
We have already seen what dilutions are, and how to calculate them using the simple M1V1 = M2V2 equation. We are now going to look at serial dilutions. These are just multiple dilutions, and we can still use our same equation. Serial...
BioEd Online
Bio Ed Online: Quantitative Methods: Part 1. Solutions and Dilutions
In this video David Caprette, PhD, discusses the types and properties of mixtures prepared and/or encountered in a biological laboratory. He also introduces basic lab equipment, terms and concepts related to formulas, and the concept of...
BioEd Online
Bio Ed Online: Quantitative Methods: Part 2. Diluting Solutions
Many students panic when they must dilute something, but it is relatively easy to work out dilution problems once a solid frame of reference is established. In the following video David Caprette, PhD, explains the process, step by step,...